Copy: Disable CopyKotlinDeclarationsHandler on non-source files

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/after/A/A.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/after/A/bar/test.kt

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+package foo
+
+fun test() {
+
+}

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/after/A/foo/test.kt

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+package foo
+
+fun test() {
+
+}

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/before/A/A.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/before/A/foo/test.kt

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+package foo
+
+fun test() {
+
+}

idea/testData/refactoring/copyMultiModule/fileNotUnderSourceRoot/fileNotUnderSourceRoot.test

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+{
+  "mainFile": "A/foo/test.kt",
+  "targetDirectory": "A/bar"
+}